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- OVAL Psonic-L4
Psonic-L4 Ultrasonic Oil Flowmeter
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The OVAL Psonic-L4 is a high-performance ultrasonic flowmeter designed for custody transfer and accurate petroleum product measurement. Using a parallel 4-path ultrasonic system, it achieves ±0.15% accuracy while ensuring long-term stability and redundancy.
The design enables bi-directional measurement, reducing pipeline layout and installation costs. With no strainer required, running costs are minimized. Extensive self-diagnostics, ISO/IEC17025 calibration traceability, and explosionproof construction make it a reliable solution for critical oil and fuel applications, including gasoline, kerosene, light oil, and heavy oil.
Features
Measurement Principle
Propagation time and flow velocity (flow rate)
The ultrasonic flowmeter measures the time of ultrasonic wave transmitted from one sensor and received by the other. This time duration is called “propagation time.”
When there is no flow, the propagation time from sensor A to sensor B (Tab) and the propagation time from sensor B to sensor A (Tba) should be the same. However, once the fluid is flowing, ultrasonic signal is affected by the flow, creating a difference between propagation times Tab and Tba. The ultrasonic flowmeter measures propagation times Tab and Tba, then calculates the flow velocity from the difference in propagation times, and provides the flow rate by multiplying the flow velocity by the cross-section area of the pipe.
The parallel path system provides long-term stability and redundancy
Parallel path system allows long-term stability
Small attenuation of ultrasonic waves allows strong signal reception. Compared to the reflection method, ultrasonic waves are less likely to be affected by risks such as dirt inside the pipe.
4-path system provides redundancy
To continue the measurement in case of sensor failure, the Psonic-L4 is capable of supplement processing. The possible downtime can be minimized.
New flowmeter for custody transfer of petroleum products
● Suitable for custody transfer application of petroleum products
● Capable of bi-directional measurement
● Bi-directional measurement simplifies pipeline layout: lower pipe installation cost
● No strainer required: reduces running cost
Extensive self-diagnostic functions
To achieve superior performance stability as a liquid flowmeter (especially for the measurement of petroleum products), the Psonic-L4 is equipped with extensive self-diagnostic functions.
High accuracy: ±0.15％RD
●With its 4-path method, the Psonic-L4 achieved the accuracy of ±0.15%RD.
●Conducting the calibration test at ISO/IEC17025 accredited facility ensures the traceability required in custody transfer applications.
■ Under the condition where an upstream
meter run with flow straightener (10D) and
a downstream meter run (5D) are installed
Applicable fluid
- gasoline
- kerosene
- light oil
- heavy oil
- other
GENERAL SPECIFICATIONS
| Applicable fluids | Oil, heavy oil, other liquids (Homogeneous liquid through which an ultrasonic wave propagates) | ||
| Nominal size | 100, 150, 200, 250, 300mm | ||
| Number of lines measured | 4 | ||
| Flange standard | JIS 10, 20, 30K RF / JPI 150, 300 RF / ASME 150, 300 RF | ||
| Flow velocity measuring range | −10 to +10m/s | ||
| Accuracy | ±0.5%RD (Standard), ±0.15%RD (high accuracy calibration) | ||
| Temp. range | −20 to +120°C | ||
| Max. operating pressure | Depends on flange rating (Design pressure : 8MPa at 120°C) | ||
| Configuration | Explosionproof (TIIS, ATEX), IP66 | ||
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